13) The points A (9,0), B (9,6), C(-9,6), D(-9,0) are the vertices of
<u>A)</u><u> </u><u>square</u><u> </u><u>✓</u><u>✓</u><u>✓</u>
B) rectangle
C) rhombus
D) trapezium.
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Answer:
You have to convert the denominator. -37/36
Step-by-step explanation:
-1/4 - 7/9
-7/9(4)
-1/4 (9)
-9/39 -28/36
-37/36
You follow the rule PEMDAS parenthesis, exponent, multipy, divide, add, substart. So you would start off by doing 27-12x2, you would do 12x2=24 first then 27-24=3. So then it would be 4+3/2, do 3/2=1.5, then add it 4+1.5=5.5. So the correct answer is 5.5
Answer:
Step-by-step explanation:
All the masses here are based on the main mass of the sand. So we will call sand "x". If there is two times as much cement as sand, then cement is 2x; if there is three times as much stone as sand, then stone is 3x. All of these added together equal a mass of 600 kg:
x + 2x + 3x = 600 so
6x = 600 and
x = 100 kg
There are 100 kg of sand. That means that there is 200 kg of cement and 300 kg of stone
%=percent
percent means parts out of 100
20%=20/100
'of' means multiply
20% of 100 units means
20/100 times 100 units=2000/100 units=20 units
